mmc: bcm2835: Fix possible NULL ptr dereference in bcm2835_request
This fixes a NULL pointer dereference in case of a MMC request with a set block count command and no data. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Peter Robinson <pbrobinson@gmail.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -1200,7 +1200,8 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
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return;
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}
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host->use_sbc = !!mrq->sbc && (host->mrq->data->flags & MMC_DATA_READ);
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host->use_sbc = !!mrq->sbc && host->mrq->data &&
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(host->mrq->data->flags & MMC_DATA_READ);
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if (host->use_sbc) {
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if (bcm2835_send_command(host, mrq->sbc)) {
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if (!host->use_busy)
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